Detachable calk.



J. H. GERKEN & L. HEBENSTR T.

DETAGHABLE GALK.

' APPLICATION FILED JANJS, 1914.

Patented July 21, 1914.

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PATE FSE.,

JOHN I-I. GERKEN AND LOUISHEBENSTREIT, 0F PITTSBURG, KANSAS.

DETACHABLE CALK.

To all whom t may concern Beit known that we, Jol-IN H. GERKEN and LoUis Hnnnnsrnnrr, citizens or the United States, residing` at Pittsburg, in the county of Crawford and State of Kansas, have invented a new and useful improvement in Detachable Calks, of which the following is a specification.

rlhis invention relates to detachable horseshoe calks and especially to the means employed for locking said calks in position.

The invention consists of the novel features of construction hereinafter described, pointed out in the claims and shown in the accompanying drawings, in which:

Figure l is an inverted plan view of a horse-shoe provided with our calks. Fig. 2 is a. side elevation of the shoe, a locking dervice being shown in open position in dotted lines. F 3 is a section on the line 8-3 of F l, the calk being unlocked. Fig. L is a section on the line LF-l of Fig. l.

l'n these drawings l represents a horse shoe provided with a toe boss 2 and heel bosses 3. The toe boss is provided with a transversely extending wedge shaped and dovetail slot et, and the heel bosses are provided with similar longitudinally extending slots A toe calk 6 is adapted to be fitted into the slot et, and heel calks are provided with shanks 8 which extend into the slots 5.

These calks may be of any desired 'form and while the toe calk is oit' a slightly dif- 'ferent shape from the heel calks the locking means which is the essential feature of this invention is 'the same for all of the calks. Each calk has provided in its sh ank portion a transverse groove 9 and extending from the inner end of the shank is an integral inetal strip l0, which is bent back upon the shank and is then bent inwardly to form a. head ll which is adapted to be driven into the groove 9. The strip 10 increases in width from the sha-nk to the head so that the head l1 is or' greater length than the Speccation of Letters Patent.

Application filed January 16, 1914.

Patented July 2li, 1914i.

Serial No. 812,486.

groove 9 and when driven into said grooves the said heads project beyond the ends of the grooves and bear against the inner faces of the bosses, thereby preventing withdrawal of the calks until said heads have been again forced out of the grooves 9.

By means of this construction we provide detachable calks each of which carries its own locking device, and it is unnecessary to hunt up screws, bolts or keys in order 'to lock a calk in position.

What we claim is:

l. The combination with a horse-shoe having dovetail bosses, of calks having shanks adapted to 'tit said bosses, said shanks beingl transversely grooved, and integral metal strips carried by said shanks and bent back upon the shanks, the free ends of said strips coperating with said grooves, the end portions of the strips having a width exceeding the length of the grooves.

2. The combination with a horse-shoe calk, of a shank having a transverse groove therein, a comparatively thin metal strip carried by the end of the shank and bent back over the shank, said strip having its free end bent inwardly and adapted to enter said groove, the said end portion having a width greater than the length of the groove.

8. The combination with a. horse-shoe having a boss provided with a dovetail slot, of a oalk having a shank adapted to enter said boss, said shank being transversely grooved, said groove resting immediately adjacent the inner tace of the boss when the shank is in position, and means formed integral with said shank for entering said groove, said means havingY a greater width than the length of the groove.

JQHN H. GERKEN. LOUlS HEBENSTREIT.

Witnessesz- U. O. BoUniNor, E. l. Powers.

opes of this patent may be obtained for five cents each, by addressing the Commissioner of atente, Washington, D. C. 

